Bede

And the clouds condense with dew. It is clear according to the letter, but allegorically the clouds are the teachers of the Church, elevated by contemplation and life, watering the hearts of listeners, like the land subjected to them by doctrine. Which condense with dew, because by the most subtle discernment they examine their virtues, which profit them, which lift them to high things, and which display examples to the lesser, and they examine them.

Commentary on Proverbs ↗